/*
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is MPEG4IP.
 *
 * The Initial Developer of the Original Code is Cisco Systems Inc.
 * Portions created by Cisco Systems Inc. are
 * Copyright (C) Cisco Systems Inc. 2001.  All Rights Reserved.
 *
 * Contributor(s):
 *      Dave Mackie     dmackie@cisco.com
 */

#include "src/impl.h"

namespace mp4v2
{
    namespace impl
    {

        ///////////////////////////////////////////////////////////////////////////////

        MP4UrlAtom::MP4UrlAtom(MP4File &file, const char *type)
            : MP4Atom(file, type)
        {
            AddVersionAndFlags();
            AddProperty(new MP4StringProperty(*this, "location"));
        }

        void MP4UrlAtom::Read()
        {
            // read the version and flags properties
            ReadProperties(0, 2);

            // check if self-contained flag is set
            if (!(GetFlags() & 1))
            {
                // if not then read url location
                ReadProperties(2);
            }

            Skip(); // to end of atom
        }

        void MP4UrlAtom::Write()
        {
            MP4StringProperty *pLocationProp =
                (MP4StringProperty *)m_pProperties[2];

            // if no url location has been set
            // then set self-contained flag
            // and don't attempt to write anything
            if (pLocationProp->GetValue() == NULL)
            {
                SetFlags(GetFlags() | 1);
                pLocationProp->SetImplicit(true);
            }
            else
            {
                SetFlags(GetFlags() & 0xFFFFFE);
                pLocationProp->SetImplicit(false);
            }

            // write atom as usual
            MP4Atom::Write();
        }

        ///////////////////////////////////////////////////////////////////////////////

    }
} // namespace mp4v2::impl
